Breakdown of Yürüyüş planlayacaktık ama hava kötüleşti.
ama
but
hava
weather
yürüyüş
walk / hike
planlamak
to plan
Questions & Answers about Yürüyüş planlayacaktık ama hava kötüleşti.
How do the suffixes in planlayacaktık combine to mean 'we were going to plan'?
It combines the future suffix -acak and the past tense suffix -tı. The verb stem is planla- (to plan). Adding the future makes it 'will plan', and adding the past makes it 'was/were going to plan' (an intention that didn't happen). Finally, the -k at the end means 'we'.
Why is there a y right before -acak in planlayacaktık?
The verb stem planla- ends in a vowel, and the future suffix -acak starts with a vowel. In Turkish, you need the buffer letter -y- to prevent two vowels from crashing together, giving us planlayacak.
How is kötüleşti formed from the word for 'bad' (kötü)?
The suffix -leş (or -laş) is added to adjectives or nouns to mean 'to become' or 'to get'. So kötü (bad) becomes the verb kötüleşmek (to get worse). The -ti at the end is just the simple past tense, making it 'got worse'.
'A walk' is the direct object here. Why isn't it yürüyüşü with the accusative case?
Because they are talking about planning a walk in general, not a specific walk. In Turkish, indefinite direct objects (things you would translate with 'a' or 'an') stay in their plain dictionary form. If they had planned a specific, previously mentioned walk, it would be yürüyüşü.